/* 以后每个页面都可以使用 */
html,body,div,p,ul,ol,li,dl,dt,dd,h1,h2,h3,h4,h5,h6,hr,table,form,tr,th,thead,tfoot,tbody,label,fieldset,legend,marquee,iframe,header,nav,main,footer,figure,figcaption,hgroup,video,audio,section,mark,aside,article,section,dialog,datalist,input,button,img{
    margin:0;
    padding:0;
}
body{
    font-size: 12px;
}
input,button{
    outline: 0;
}
a,u,del,s{
    text-decoration: none;
}
h1,h2,h3,h4,h5,h6,b,strong,i,em,var{
    font-weight: normal;
    font-style: normal;
}
ul,ol,li{
    list-style: none;
}
img{
    vertical-align: middle;
}
.noborder{
    border:0!important;
}
.clear::after{
    content: '';
    display: block;
    clear: both;
    height: 0;
    overflow: hidden;
    visibility: hidden;
}